Arrastra (original) (raw)
Una arrastra (o arastra) es un molino primitivo utilizado para moler y pulverizar minerales de oro o plata. La forma más simple de arrastra consiste en dos o más piedras de fondo plano colocadas en un hoyo circular pavimentado con piedras planas, conectadas a un poste central por un brazo largo. Con la fuerza de un caballo, una mula o incluso un ser humano aplicada al otro extremo del brazo, se arrastran lentamente las piedras en círculo, triturando el mineral. Algunas arrastras estaban propulsadas por una rueda hidráulica, y más adelante se utilizaron motores de vapor o gasolina, e incluso electricidad.
| Property | Value |
|---|---|
| dbo:abstract | An arrastra (or arastra) is a primitive mill for grinding and pulverizing (typically) gold or silver ore. Its simplest form is two or more flat-bottomed drag stones placed in a circular pit paved with flat stones, and connected to a center post by a long arm. With a horse, mule or human providing power at the other end of the arm, the stones were dragged slowly around in a circle, crushing the ore. Some arrastras were powered by a water wheel; a few were powered by steam or gasoline engines, and even electricity. Arrastras were widely used throughout the Mediterranean region since Phoenician times. The Spanish introduced the arrastra to the New World in the 16th century. The word "arrastra" comes from the Spanish language arrastrar, meaning to drag along the ground. Arrastras were suitable for use in small or remote mines, since they could be built from local materials and required little investment capital. For gold ore, the gold was typically recovered by amalgamation with quicksilver. The miner would add clean mercury to the ground ore, continue grinding, rinse out the fines, then add more ore and repeat the process. At cleanup, the gold amalgam was carefully recovered from the low places and crevices in the arrastra floor. The amalgam was then heated in a distillation retort to recover the gold, and the mercury was saved for reuse. For silver ore, the patio process, invented in Mexico in 1554, was generally used to recover the silver from ore ground in the arrastra. (en) Una arrastra (o arastra) es un molino primitivo utilizado para moler y pulverizar minerales de oro o plata. La forma más simple de arrastra consiste en dos o más piedras de fondo plano colocadas en un hoyo circular pavimentado con piedras planas, conectadas a un poste central por un brazo largo. Con la fuerza de un caballo, una mula o incluso un ser humano aplicada al otro extremo del brazo, se arrastran lentamente las piedras en círculo, triturando el mineral. Algunas arrastras estaban propulsadas por una rueda hidráulica, y más adelante se utilizaron motores de vapor o gasolina, e incluso electricidad. (es) |
| dbo:thumbnail | wiki-commons:Special:FilePath/Arrastra_diagram_1886.gif?width=300 |
| dbo:wikiPageExternalLink | http://www.britannica.com/EBchecked/topic/36042/arrastra |
| dbo:wikiPageID | 31261994 (xsd:integer) |
| dbo:wikiPageLength | 3212 (xsd:nonNegativeInteger) |
| dbo:wikiPageRevisionID | 1048352442 (xsd:integer) |
| dbo:wikiPageWikiLink | dbc:Grinding_mills dbc:History_of_metallurgy dbc:History_of_mining dbc:Mining_equipment dbr:New_World dbr:Ore dbr:Encyclopædia_Britannica dbr:Gold dbr:Silver dbr:Patio_process dbr:Amalgam_(chemistry) dbr:Mill_(grinding) dbr:Water_wheel dbr:Phoenicia dbr:Spain dbr:Spanish_language dbr:Mercury_(element) dbr:Investment_capital dbr:Mediterranean_region dbr:File:Arrastra,_Liberty_WA.jpg dbr:File:Arrastra_diagram_1886.gif |
| dbp:wikiPageUsesTemplate | dbt:Commonscat-inline dbt:Reflist dbt:Short_description dbt:Extractive_metallurgy |
| dct:subject | dbc:Grinding_mills dbc:History_of_metallurgy dbc:History_of_mining dbc:Mining_equipment |
| gold:hypernym | dbr:Mill |
| rdf:type | yago:Artifact100021939 yago:BuildingComplex102914991 yago:Factory103316406 yago:Object100002684 yago:PhysicalEntity100001930 yago:Plant103956922 yago:WikicatGrindingMills yago:YagoGeoEntity yago:YagoPermanentlyLocatedEntity dbo:Building yago:Structure104341686 yago:Whole100003553 |
| rdfs:comment | Una arrastra (o arastra) es un molino primitivo utilizado para moler y pulverizar minerales de oro o plata. La forma más simple de arrastra consiste en dos o más piedras de fondo plano colocadas en un hoyo circular pavimentado con piedras planas, conectadas a un poste central por un brazo largo. Con la fuerza de un caballo, una mula o incluso un ser humano aplicada al otro extremo del brazo, se arrastran lentamente las piedras en círculo, triturando el mineral. Algunas arrastras estaban propulsadas por una rueda hidráulica, y más adelante se utilizaron motores de vapor o gasolina, e incluso electricidad. (es) An arrastra (or arastra) is a primitive mill for grinding and pulverizing (typically) gold or silver ore. Its simplest form is two or more flat-bottomed drag stones placed in a circular pit paved with flat stones, and connected to a center post by a long arm. With a horse, mule or human providing power at the other end of the arm, the stones were dragged slowly around in a circle, crushing the ore. Some arrastras were powered by a water wheel; a few were powered by steam or gasoline engines, and even electricity. (en) |
| rdfs:label | Arrastra (en) Arrastra (es) |
| owl:sameAs | freebase:Arrastra yago-res:Arrastra wikidata:Arrastra dbpedia-es:Arrastra https://global.dbpedia.org/id/4SaXU |
| prov:wasDerivedFrom | wikipedia-en:Arrastra?oldid=1048352442&ns=0 |
| foaf:depiction | wiki-commons:Special:FilePath/Arrastra,_Liberty_WA.jpg wiki-commons:Special:FilePath/Arrastra_diagram_1886.gif |
| foaf:isPrimaryTopicOf | wikipedia-en:Arrastra |
| is dbo:wikiPageRedirects of | dbr:Arastra |
| is dbo:wikiPageWikiLink of | dbr:Bates_Well_Ranch dbr:Garlock,_California dbr:Gilpin_Railroad dbr:Comstock_Lode dbr:Congress_Mine dbr:Arrastra_Creek dbr:Patio_process dbr:Timeline_of_mining_in_Colorado dbr:Hedges,_California dbr:Amador_City,_California dbr:Gold_Creek_(Juneau,_Alaska) dbr:Gold_rush dbr:Good_Hope_Mine dbr:History_of_Knott's_Berry_Farm dbr:Mill_(grinding) dbr:History_of_Nevada dbr:Keys_Desert_Queen_Ranch dbr:Laws,_California dbr:Sweet_Vengeance_Mine dbr:Mariposa,_California dbr:Pine_Grove,_Nevada dbr:Mining dbr:List_of_types_of_mill dbr:Arastra |
| is foaf:primaryTopic of | wikipedia-en:Arrastra |
